We have become aware of a Trojan that is being distributed via adobe PDF attachments. Do not open or click on a .pdf attachment unless you know that it is safe, or sent from someone whose identification you can verify. This is how the Trojan works: The user is sent a socially engineered email with a PDF attachment. When the victim opens the malicious PDF, his machine is pushed a Trojan that then installs the Infostealer family of malware that logs keystrokes, captures screenshots, and sends that information to its controller. Symantec has christened the Trojan as Trojan.Pidief.H. According to Adobe, they will not have a fix until 1/12/2010. So it appears the criminals have targeted the Christmas shopping season because so many online merchants send PDF receipts
If you want to read more about this, copy and paste this link to your web browser: http://www.adobe.com/support/security/advisories/apsa09-07.html, or http://www.darkreading.com/vulnerability_management/security/app-security/showArticle.jhtml?articleID=222002143
When will AVAST catch this?